Hi - I don't quite get these dropouts... what is the point of the cutouts on the tabs? How should they be attached... i.e. how far in should they go? To complicate things the tabs are tapered. Should I cut a v shaped slot to fit? Would really appreciate your thoughts!
I wonder if the tapers are for allowing straight stays to come in on an angle, not requiring the drop-out to be bent or using S-bend stays.
I could see it helping that, but I've also seen it as a cosmetic treatment:
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i bet they're for domed stays perhaps?
See this blog for pictures. Once v-slotted you hammer the chainstay ends over the dropout so you wouldn't have to fill it with much brass at all for a solid connection.
Just a theory...